The couple are still devoted but believe monogamy and marriage don't mix

She told the Daily Mail: “It was pretty clear from the beginning of the relationship that Charles is not your average kind of guy. I knew he had a terrible reputation with women.

“There comes a time when you say, am I going to stay and adjust to his affairs and flings, or am I going to walk? I wanted to stay, so we thought let’s try it, let’s have an open relationship.”

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Since then the couple have openly dated other people and believe it keeps their marriage strong.

Charles said: “When you're living life like an open book with no secrets you're closer with each other.”

His wife, who often guests on the Real Housewives of Melbourne, added: “Charles is very famous for saying that I am loyal but I’m not faithful. I can love my husband and enjoy a tender moment with someone else.”